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AirTAC MIJ Series · Mini Cylinder

Airtac MIJ Adjustable Cylinder MIJ40X450-100S

The AirTAC MIJ Adjustable Cylinder MIJ40X450-100S is a genuine double acting, double rod, adjustable stroke round-body mini air cylinder with a Ø40mm bore and 450mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.

  • BoreØ40 mm
  • Stroke450 mm
  • Port size1/4"
  • Acting typeDouble acting, double rod, adjustable stroke
  • Rod threadM12×1.25
  • CushionFixed TPU bumper pads
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About the Airtac MIJ Adjustable Cylinder MIJ40X450-100S

Dial in a precise forward end position on the fly with the AirTAC MIJ40X450-100S, a round-body stainless steel mini cylinder built for heavy-duty pneumatic tasks. A built-in piston magnet (-S suffix) enables seamless integration with CMSG, DMSG, or EMSG reed and electronic switches for end-of-stroke confirmation.

The external stop screw allows you to shorten the extend stroke by up to 100 mm on-site, giving you a usable forward range of 350-450 mm without changing the cylinder. The 1/4" port and M12x1.25 male rod thread ensure robust fluid and mechanical connections, while fixed TPU bumper pads absorb impact at the stroke ends.

Airtac MIJ Adjustable Cylinder MIJ40X450-100S Technical Specifications

ModelAirtac MIJ Adjustable Cylinder MIJ40X450-100S
SeriesMIJ mini cylinder
Bore sizeØ40 mm
Stroke450 mm
Acting typeDouble acting, double rod, adjustable stroke
Port size1/4"
Rod threadM12×1.25
FluidAir (filtered by 40µm element)
Operating pressure0.15 – 1.0 MPa
Proof pressure1.5 MPa
Temperature-20 to +70 °C
Speed range30 – 800 mm/s
CushionFixed TPU bumper pads
Max standard strokeUp to 500 mm

Specifications follow the official AirTAC MI/MIC (ISO 6432) datasheet. Barrel & rod: stainless steel (round-body, riveted construction). Thread options: PT (blank) / G. Note: the Ø40 bore is a larger, non-ISO-6432 size.

Theoretical Output Force (Ø40mm)

PressureForce (both ways)
0.5 MPa528 N
0.7 MPa739 N
Max (@1.0 MPa)108 kgf

MIJ / MICJ are double-rod: the rear rod that carries the stroke adjuster exits the rear cover, so both piston faces lose rod area. The rod-side (annular) area is used for both directions (conservative).

Model Code: Airtac MIJ Adjustable Cylinder MIJ40X450-100S

MIJround-body mini cylinder (adjustable-stroke).
40Bore size in mm.
×450Stroke length in mm.
-100Adjustable stroke window (mm the extend stroke can be shortened on site).
-SOptional built-in magnet for CMSG / DMSG / EMSG sensors.

MI-family variants: MI / MIC (double acting ±cushion), MSI / MTI (single acting push / pull), MID / MICD (double rod ±cushion), MIJ / MICJ (double rod, adjustable stroke ±cushion). Back covers CA / U / R / CM. Mounting LB / FA / SDB / TC.

Where the Airtac MIJ Adjustable Cylinder MIJ40X450-100S Is Used

precision_manufacturing

Heavy Fixture Clamping

Secure large castings during machining by dialing the extend stroke in by up to 100 mm to accommodate varying part dimensions while applying 628.3 N of clamping force.

conveyor_belt

Pallet Stopper Gates

Act as an adjustable physical stop for heavy pallets on a line, fine-tuning the blocking position on-site without needing to swap out the entire cylinder assembly.

warehouse

Material Lift Diverter

Push heavy cartons onto diverter chutes at varying angles, using the adjustable forward end position to manage different box sizes without retooling the station.

Is the Airtac MIJ Adjustable Cylinder MIJ40X450-100S the Right Cylinder?

The 100 mm adjustment window is ideal for absorbing mechanical tolerances or staging multiple forward stops from a single part number. Keep in mind the stop screw only trims the extend end; it is not a mid-stroke lock. If the application requires holding a load during air loss, you must add an external rod lock or pilot check valve, as the piston will drift. Mounting options include LB foot, FA flange, and TC trunnion brackets (SDB pivot blocks are not available for this adjustable variant).

Quick checklist

  • ✓ Required force at your working pressure
  • ✓ Stroke and mounting space
  • ✓ Port/thread type (PT / G)
  • ✓ Magnet (-S) for sensors?
  • ✓ Back cover (CA/U/R/CM) & mount (LB/FA/SDB/TC)
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Installation & Maintenance Notes

  • check Use clean air filtered to 40µm or finer.
  • check Keep within 0.15 – 1.0 MPa operating pressure.
  • check Avoid side load on the piston rod.
  • check Do not dismantle the riveted front/back covers.
  • check Use correct back cover (CA/U/R/CM) & mount (LB/FA/SDB/TC).
  • check Installation by qualified personnel per AirTAC docs.

Airtac MIJ Adjustable Cylinder MIJ40X450-100S FAQ

This Ø40 mm bore cylinder features a 1/4" air port and an M12x1.25 male rod thread. The theoretical maximum force is 128.1 kgf at 1.0 MPa.

An external stop screw allows you to shorten the extend stroke by up to 100 mm on-site, providing a usable forward range of 350-450 mm from the 450 mm nominal stroke. The retract stroke remains full. Note that this only sets the end position; it does not lock the piston mid-stroke. The -S suffix indicates a built-in magnet for position sensing.

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